a subject tonight is the aftermath to the deadly shooting in connecticut. we begin with mayor michael bloomberg of new york. >> shame on me if i am, as an american, with the wherewithal to do something, i have the bully pulpit, i have some money to spend to support candidates, shame on me if i don't go and do something. how can i explain to my kids that i didn't dosomething when, you know, i had this able to change the world. >> rose: we continue with john miller, dr. jeffrey lieberman and aborn. >> we have seen in our society a relaxation of cultural norms and constraints, and elevation of individuals of right to express themselves as individuals, freedom of speech, personal autonomy, self-determination. we've seen an elevati of the rits of the indidua to t extent that it's maybe at the expense of the collective society whether it's gun control, right to bear arms or whether it's i can do and say anything and it's my right to do it no matter whom i offend. >> rose: we conclude this evening with mayor julian castro of san antonio and his twin brother joaqui